Calling custom code inside CORE module

In my product/project development I have a scenario to call the custom code inside core module. I have done the below implementation using Spring and Java Reflection. Provide your suggestion w.r.t further improvements.

Spring Context XML - Configuration:

    <bean id="employeeDAOImpl" class="com.spring.employee.dao.EmployeeDAOImpl">
        <property name="employeeCustomDAOClassList" ref="employeeCustomDAOClassList"></property>
    </bean>
    <util:list id="employeeCustomDAOClassList" list-class="java.util.ArrayList">
        <value>com.spring.employee.dao.EmployeeCustom1DAOImpl</value>
        <value>com.spring.employee.dao.EmployeeCustom2DAOImpl</value>
    </util:list>

Core Employe DAO Class:

package com.spring.employee.dao;

import java.lang.reflect.Method;
import java.util.List;

import com.spring.employee.bean.EmployeeVO;

public class EmployeeDAOImpl {

    public List<String> employeeCustomDAOClassList;

    public EmployeeVO saveEmployee(EmployeeVO employeeVO) {
        System.out.println("EmployeeDAOImpl saveEmployee - core business logic executed Sucessfully...");
        // TODO implement core business logic to persist employee object.
        // invoke custom methods from core based on the configurable approach.
        employeeVO = (EmployeeVO) invokeCustomMethods(employeeVO, getEmployeeCustomDAOClassList());
        return employeeVO;
    }

    /**
     * This method is used to invoke the custom methods from core methods
     * 
     * @param inputObj
     * @param customeClassList
     * @return
     */
    public Object invokeCustomMethods(Object inputObj, List<String> customeClassList) {
        try {
            Class[] paramEmployeeVO = new Class[1];
            paramEmployeeVO[0] = Object.class;

            if (!customeClassList.isEmpty()) {
                for (String className : customeClassList) {
                    Class cls = Class.forName(className);
                    Object obj = cls.newInstance();
                    Method method = cls.getDeclaredMethod(Thread.currentThread().getStackTrace()[2].getMethodName(), paramEmployeeVO);
                    inputObj =  method.invoke(obj, inputObj);
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        return inputObj;
    }

    /**
     * @return the employeeCustomDAOClassList
     */
    public List<String> getEmployeeCustomDAOClassList() {
        return employeeCustomDAOClassList;
    }

    /**
     * @param employeeCustomDAOClassList
     *            the employeeCustomDAOClassList to set
     */
    public void setEmployeeCustomDAOClassList(List<String> employeeCustomDAOClassList) {
        this.employeeCustomDAOClassList = employeeCustomDAOClassList;
    }

}

Custom Employee DAO Classes:

public class EmployeeCustom1DAOImpl {

    public Object saveEmployee(Object employeeVO) {
        System.out.println("Custom 1 EmployeeDAOImpl::saveEmployee - custom business logic executed Successfully...");
        return employeeVO;

    }
}


public class EmployeeCustom2DAOImpl {

    public Object saveEmployee(Object employeeVO) {
        System.out.println("Custom 2 EmployeeDAOImpl::saveEmployee - custom business logic executed Successfully...");
        return employeeVO;

    }
}